Home / 15,766.11-21,757.38-8,692.80

Finding the Fourth Proportional to 15,766.11, 21,757.38 and 8,692.80

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Solution

The fourth proportional to 15,766.11, 21,757.38 and 8,692.80 is: 11,996.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,766.11 : 21,757.38 = 8,692.80 : x
  2. Step 2: Convert to fraction form
    15,766.11/21,757.38 = 8,692.80/x
  3. Step 3: Cross multiply
    15,766.11x = 21,757.38 × 8,692.80
  4. Step 4: Simplify right side
    15,766.11x = 189,132,552.86
  5. Step 5: Solve for x
    x = 189,132,552.86/15,766.11
  6. Step 6: Final answer
    x = 11,996.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.